Fresh from our review of the HPU-4M880/HPU-4M630 Type M Series,Hiper returns with an all new concept for power supply units. By combining the passive cooling of an open-grill chassis design with a set of integrated High-Speed USB ports, Hiper introduces their Type R Mk-II power supplies in 680W and 880W versions. Benchmark Reviews reveals the innovative HPU-5K880 & HPU-5B680 PSU's with our set of power regulation tests.